And there are vampires, too? Werewolves, warlocks, all that stuff?" Clary gnawed her lower lip. "So I hear." "And you kill them, too?" Simon asked, directing the question to Jace, who had put the stele back in his pocket and was examining his flawless nails for defects. "Only when they've been naughty.
Cassandra Clare (2012). “Cassandra Clare: The Mortal Instruments Series (5 books): City of Bones; City of Ashes; City of Glass; City of Fallen Angels, City of Lost Souls”, p.117, Simon and Schuster